Window-ventilator



(No Model.)

D. N. COOK. YWINDOW VBNTILATOR.

Patented Dec. 27, 1892,

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NTTE STATES PATENT OFFICE.

DAVID N. COOK, OF SALEM, MASSACHUSETTS.

WIN DOW-VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 488,920, dated December27, 1892.

Application filed December 14, 1891. Serial No. 414,946. (No model.)

To all whom it may concern.-

Be it known that I, DAVID N. 000K, a citizen of the United States, and aresident of Salem, in the county of Essex and State of Massachusetts,have invented new and useful Improvements in Window-Ventilators, ofwhich the following,.taken in connection with the accompanying drawings,is aspecification.

This invention relates to improvements in window ventilators and it iscarried out as follows, reference being bad to the accompanyingdrawings, wherein Figure 1 represents a front elevation of the improvedventilator showing it in a position for use in a window frame; Fig. 2represents a horizontal section on the line XX shown in Fig. 1; Figs. 3,4 and 5 represent vertical sections respectively on lines Y-Y, Z-Z, andVV-VV shown in Fig. 1.

Similar letters refer to similar parts Wherever they occur on thedifferent parts of the drawings.

In Fig. 1, A represents the sill and A, A, the uprights of a windowframe as usual. 13 is the lower movable window sash in the ordinarymanner. The improved ventilator is composed of a preferably rectangularframe 0 which is covered on the outside with a perforated wire gauze ornetting D that serves for the purpose of preventing dust from enteringthe room or apartment where the ventilator is located. The frame 0 iscovered on the inside with a plate E as shown in the drawings; throughthe said plate, I make a series of openingsf, g, h, and e' for theadmission of the outer air to the room or apartment as may be neededfrom time to time. The opening f is normally closed by means of aswinging gate F hinged at its lower end to the plate E and providedwithside wings F, F, for the purpose of conducting -the fresh air upwardinto the apartment when the gate F is swung inward as shown in Fig. 3thus preventing a direct draft. The inward swinging movement of thehinged gate is limited bya stop composed, as here shown, of a flexiblestrap connection F between the upper end of the gate and the plate E.The opening 9 is normally closed by means of a slide G movable insuitable guides and may be opened more or less as may be desired for themore direct ventilation of the room. The

opening h has on the inside of the plate E, a

tube or nozzle H normally closed by means of a plug or stopper h.

When it is desired to convey the outer fresh air to any desired portionof the room or apartment, I attach to the nozzle H, a flexible hose pipeH as shown in Fig. 2 which may be led to such portion of the room towhich the fresh air may be desired to be conveyed.

The opening 2 is covered on the inside of the plate E with a box orconveyer I having an opening at its upper end which is normally closedby means of a movable slide, valve orgate I which may be opened more orless as maybe desired for the admission of fresh air to the room orapartment. The said box I serves to conduct the air upward into the roomwithout causing a direct draft into the latter.

The ventilator when used is placed in the window opening as shown inFig. 1, the window being raised sufficiently for this purpose and letdown so as to rest on the frame O as shown.

By means of this my improved ventilator, fresh air may be admittedeither directly into the room or conducted upward without causing adirect draft as maybe desired, or it may be conveyed by means of a hoseor tube to any portion of the room or apartment as may be needed thusmaking it the most effective and convenient device for properly airingor ventilating rooms.

Having thus fully described the nature, construction and operation of myinvention, I wish to secure by Letters Patent and claim:

A window ventilator, consisting of the rect-' angular frame 0 covered atits outside with wire gauze or netting D and at its inside provided witha plate E having an air inlet valve and a nozzle I-I provided with astopper h, and a tube I-I adapted to connect with the nozzle forconducting air to different. portions of an apartment, substantially asdescribed.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 9th day of December, A.D. 1891.

DAVID N. COOK.

Witnesses:

ALBAN ANDREN, ALICE A. PERKINS.

ICO

